<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .aaa{
            border: 1px solid red;
        }
        .div1{   
            word-wrap:  break-word;   
            word-break:  normal;   
            width: 100%;
		
        }
    </style>
</head>
<body>
    <div>
        <div class="aaa" style="width: 200px; height: 200px; display: flex;">
            <span class="div1"> dfjkskldjfklsjdfklsjdjhdfkjlshjkhdfjksdhfjkslhdfjshdljfhskljdf</span> 
        </div>
    </div>

</body>
</html>
